27944812272 has 80 divisors (see below), whose sum is σ = 77836525088. Its totient is φ = 8588160000.

The previous prime is 27944812261. The next prime is 27944812307. The reversal of 27944812272 is 27221844972.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 506022 + ... + 558522.

Almost surely, 2^27944812272 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 27944812272, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (38918262544).

27944812272 is an abundant number, since it is smaller than the sum of its proper divisors (49891712816).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

27944812272 is a wasteful number, since it uses less digits than its factorization.

27944812272 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53378 (or 53372 counting only the distinct ones).

The product of its digits is 903168, while the sum is 48.

The spelling of 27944812272 in words is "twenty-seven billion, nine hundred forty-four million, eight hundred twelve thousand, two hundred seventy-two".